A product from the NASA/DLR GRACE mission – the 'EIGEN-CG01C geoid'

The NASA/DLR GRACE mission (Gravity Recovery And Climate Experiment) provides highly accurate data on Earth’s gravity field. Using these data, models such as this ‘EIGEN-CG01C’ geoid can be created. The geoid is a reference surface in the gravity field of Earth for the measurement and description of the planet’s shape. The data come from both GRACE and from the satellite CHAMP.